1MHD

CRYSTAL STRUCTURE OF A SMAD MH1 DOMAIN BOUND TO DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.212 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of a Smad MH1 domain bound to DNA: insights on DNA binding in TGF-beta signaling.

Shi, Y.Wang, Y.F.Jayaraman, L.Yang, H.Massague, J.Pavletich, N.P.

(1998) Cell 94: 585-594


  • PubMed Abstract: 
  • The Smad family of proteins, which are frequently targeted by tumorigenic mutations in cancer, mediate TGF-beta signaling from cell membrane to nucleus. The crystal structure of a Smad3 MH1 domain bound to an optimal DNA sequence determined at 2.8 A ...

    The Smad family of proteins, which are frequently targeted by tumorigenic mutations in cancer, mediate TGF-beta signaling from cell membrane to nucleus. The crystal structure of a Smad3 MH1 domain bound to an optimal DNA sequence determined at 2.8 A resolution reveals a novel DNA-binding motif. In the crystals, base-specific DNA recognition is provided exclusively by a conserved 11-residue beta hairpin that is embedded in the major groove of DNA. A surface loop region, to which tumorigenic mutations map, has been identified as a functional surface important for Smad activity. This structure establishes a framework for understanding how Smad proteins may act in concert with other transcription factors in the regulation of TGF-beta-responsive genes.


    Organizational Affiliation

    Department of Molecular Biology, Princeton University, Lewis Thomas Laboratory, New Jersey 08544, USA. ygshi@princeton.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
SMAD3
A, B
132Homo sapiensMutation(s): 0 
Gene Names: SMAD3 (MADH3)
Find proteins for P84022 (Homo sapiens)
Go to Gene View: SMAD3
Go to UniProtKB:  P84022
Entity ID: 1
MoleculeChainsLengthOrganism
DNAC13N/A
Entity ID: 2
MoleculeChainsLengthOrganism
DNAD14N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.212 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 45.600α = 90.00
b = 60.400β = 102.00
c = 71.600γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1998-08-18 
  • Released Date: 1999-08-18 
  • Deposition Author(s): Shi, Y.

Revision History 

  • Version 1.0: 1999-08-18
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance